I thought that y'all might be interested in this item that just arrived
in today's TidBits newsletter (TidBits is Macintosh news useless to most
of you, but this particular item might have an effect on a number of
you).
I know ][<en is particularly interested in Tesla applications.
__________________________________________________
Dan Becker, Exec. Dir. "Oh joy! Rapture! Now
Raleigh Historic I have a brain!"
Districts Commission - Scarecrow
[log in to unmask]
919/807-8480
Tes-La Charges Laptops Wirelessly
---------------------------------
by Glenn Fleishman <[log in to unmask]>
Building on the success of short-range induction charging, such
as is used in the MobileWise wire-free electric power technology,
Posicharge, Inc. has introduced the latest advance to wireless
networking technology: the Tes-La passive energy charging system.
When a Wi-Fi hotspot adds Tes-La coils to their wireless gateways,
your laptop pulls voltage from the air using a system similar to
that which allows drivers to debit charge accounts as they zip
through special toll gates.
<http://www.mobilewise.com/>
<http://www.tes-la.us/>
A laptop requires a special antenna-like adaptor that replaces the
power adapter that comes with the machine. Although power can be
transmitted over thousands of feet, its strength dissipates as you
move away from the Tes-La coils. It's highly recommended that you
wear a grounding strap or constantly touch metal while using the
Tes-La system to avoid static discharge (Posicharge offers a pair
of grounding straps designed to look like fashionable wrist
apparel instead of cheap Velcro straps).
What's fascinating about Tes-La is that it's not a dumb system:
it uses a power delivery protocol called TCP/EP, or TCP over
Electrical Power. TCP/EP can be metered by measuring the outgoing
amperage contained in each packet. A laptop negotiates its power
needs through the protocol. For example, when you first connect
the battery is quick-charged to about 70 percent of capacity; then
the amperage is throttled back to a slow trickle to top off the
remaining capacity. Another advantage to this approach is area-
wide power consumption: the system doles out power based on the
number of users in the vicinity, averaging the outgoing power
among multiple users.
<http://www.tes-la.us/technology/>
However, the Tes-La system is not without its flaws. Sending power
through the air has been a dream of the modern age since the
1920s, but the dangers associated with it can't be understated.
One of Posicharge's competitors, Noside Connections, alleges
that if one were to place a dog in the direct path of a Tes-La
transmitter, the animal would be fried in a manner of minutes
(Noside assured us that the example is theoretical, and that
no animals have been tested in this manner).
Posicharge, in response, notes that the Tes-La system is designed
to step down its power when it senses interruptions, and that dogs
are rarely found in the cafes and other public establishments in
which Wi-Fi is traditionally offered.
Tes-La should be available in the United States once the FCC, FDA,
FAA, USDA, NSA, DHS, and other governmental agencies provide their
approval.
--
To terminate puerile preservation prattling among pals and the
uncoffee-ed, or to change your settings, go to:
<http://maelstrom.stjohns.edu/archives/bullamanka-pinheads.html>
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